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Frequency- and phase-resolved polarimetry of millisecond pulsars and its application to timing
Małgorzata Curyło, Andrew Zic, Shuangqiang Wang +16
Pulsar timing is used for a variety of applications including tests of fundamental physics, probing the structure of neutron stars, and detecting nanohertz gravitational waves. Dev…
A subpopulation of low-mass, spinning black holes: signatures of dynamical assembly
Hui Tong, Thomas A. Callister, Maya Fishbach +5
Gravitational-wave observations of massive, rapidly spinning binary black holes mergers provide increasing evidence for the dynamical origin of some mergers. Previous studies have…
GW231123: extreme spins or microglitches?
Anarya Ray, Sharan Banagiri, Eric Thrane +1
The recently reported binary black hole merger, GW231123, has unusual properties that make it hard to explain astrophysically. Parameter estimation studies are consistent with maxi…
Is GW231123 a hierarchical merger?
Lachlan Passenger, Sharan Banagiri, Eric Thrane +4
The binary black hole merger GW231123 is both the most massive gravitational-wave event observed and has the highest component spins measured to date. The dimensionless spins of th…
Trends in the Population of Binary Black Holes Following the Fourth Gravitational-Wave Transient Catalog: a Data-Driven Analysis
Nir Guttman, Ethan Payne, Paul D. Lasky +1
Current population models of binary black hole distributions are difficult to interpret because standard population inferences hinge on modeling choices, which can mask or mimic re…
Do both black holes spin in merging binaries? Evidence from GWTC-4 and astrophysical implications
Christian Adamcewicz, Nir Guttman, Paul D. Lasky +1
Angular momentum transport in high-mass stars is commonly modeled by extrapolating the behavior of better-observed low-mass stars. According to the conventional picture, the cores…